Lawn-trimmer.



T. J. UNDERWOOD. LAWN TRIMMER.

V APPLIGATION FILED JULY 22, 1912 Patented Dec. 30, 1913.

UNITED STATES PATENT OFFICE. I

THOMAS J. UNDERWOOD, 0F PEORIA, ILLINOIS.

LAWN-TRIMMER.

Specification of Letters Patent. Patented Dec, 30, 1913.

Application filed July 22, 1912. Serial No. 710,847.

- or curb cannot be cut with a lawn mower or even a sickle so as to present a neat appearance. It is therefore customary to cut a shallow groove or trench in the sod along the walk or curb so as to leave a clean cut grassedge. It is however diilicult to make a clean cut edge with the tools as now used, as the sod is diflicult to cut, due to the presence of roots, stones and other material forming the base of the ordinary lawn bed. It often happens, especially in brick walks, that the grass will grow in the cracks between the .bricks, thus presenting a very ragged and undesirable appearance.

One of the objects of this invention therefore is to provide an implement especially designed for the purpose of cutting a groove or trench along the edges of the lawn, which implement is so constructed that it will make a clean out, leaving a clean cut grass edge, which is adapted to be easily drawn through the sod, and by means of which the depth of the out can be accurately controlled.

Another object is to construct an implement which besides being adapted to cut a groove or trench in the sod, is also adapted to cut the grass-growing between the bricks and in cracks of the walk.

Another object is to design an implement which is simple in its construction, cheap to manufacture, light in weight, and effective in'its operation; and further objects will appear from the detail description taken in connection with the accompanying drawing in which:

Figure 1 is a perspective view of a tool embodying this invention, Fig. 2 is a plan,-

is a rear elevation looking inview, Fig. 3 the direction of the arrow at the top of Fig. 2, Fig. 4 is a front elevation of the tool looking in the direction of the arrow at the bottom of Fig. i8, and Fig. 5 is a view of trimmers the blank from which the cutting member or blade is made. i

Referring to the drawing, 10 designates a blank cut to form pointed ends 11, the blank when out being symmetrical. This blank is folded you the dotted line 12 to form a straight vertical side13, and the body of the blank is shaped to form a concave side 14 the upper edge of which extends to practically the same height as the upper edge of 13.

The blank so shaped forms a channel-shaped cutting member or blade having one side 13 straight and vertical and the other side 14 concave. The ends of this member or blade taper to'points forming sharp noses 15, It will be noted that the points of the noses lie slightly to one side of the center'line of the blade, these. points beingnearer the side 13 than the upper edge of the side 14. The ink 'clined edges 16 and 17, the edges 18, which form continuati'ons of the edges 17 but now extend upwardly and toward the center of the blade, and the upper edge 19 of the side 14, are sharpened to form cutting edges.

A- handle 20 is provided with a foot piece 21, havingholes arranged to receive screws. or bolts 22 passing through or secured to the blade. These screws are positioned close to the side 13 so that the handle will be clamped on the. blade close to the vertical side thereof. This handle when in position will be inclined longitudinally as well as transversely of the blade. This is clearly shown in the, drawing. I

The method of operating the implement is shown in Fig. 4. The device'is intended to be drawn toward the workman and in the direction of the arrow positioned alongside of the handle in'Fig. 2. As it is drawn along the edge of the walk or curb 25, the

side 13 will form an edge ide engaging the edge of 25. The depth 0 the out can be controlled by lowering-or raising the end of' the handle so as to vary the inclination of the blade with respect to the sod 26. This will cause the nose to cut dee er or shal- 1 lower. As the handle is inc ine'd trans versely with respect to the blade, this handle will project over thewalk or curb, so that -the workman or person handling the implement need not walk on the grass. This implement will cut a groove or trench, and if such a trench has been cut,the sharp edges 16 and 19. will cut the edge of the grass projectirTg over the trench so as to make a.

clean cut lawn edge. The implement as tool with the lower'nos'e (Fig. 2) cutting.

' the blade may be made short and pointed at whichis effective in its operation. The pro- '25 resistances. '1 h Y. so.

" ing edges and thus tweenthe bricks at the edge of the walk or provided which is "notonly simple in conassembled in the drawing is a right handed thehandle is reversed by .unbolting it an then reboltin it in reversed ositiona While in'the embo ent'shown' t e implement is I rovided with a nose at each end'so that the lade is duplex in "form, it is obvious that In orderto change it into a left handed tooli one end only. thatcase right and left handed blades are oireverse formation.

' In order to .cut off grass projecting through the walk .{or through the cracks becurb, the implement can be used as a hoe, and this grass can .:be cut off by the sharp edge 19. Due to the inclination of the handle with res ect' to the blade, this out is in the nature of a draw cut.-

It will thus 'be' seen. that the invention accomplishes its objects. implement is struction and cheap. 'to. manufacture, but

vision-of the pointed nose on the end of the implement permits nose .to plow through the ground "W. h a small amount of re'vents clogging or ,aa's these substances de along the slant out; The implement. tqvv ard the 'ivorkman pb b fac s P.- wil when ncount cantherefore be'di'awn with. comparativel slighggefiort. This as; 2;

-.enah1es thqgdepth ofthegroove or-trench to. g

be" easily-:oontrolled bT'varying the anem a: tion of the'handle and of the'blade withre spect to thefsqdg- The sharp edgeswill cause H 1, a clean 'cuttrench and clean cut'lawn edge.

,As-"the implement is so constructed that it .40

- of 'pushed, the bladecan be. drawn toward the workman instead be made of very V ca'n light construction.

It is obviousthat various changes may-be manage madein the details of construction without departing from time irit of this invention. a and it is therefore to he understood that this invention is not to'be limited to the specific construction shown and described; Having thus described "the invention What is claimed is: Y 1. A lawn-trimmer comprising a channelshaped blade having one of its sides. shaped to form an edge guide, said blade having a. sharp pointed nose formed on each end thereof, and one of the side edges of said blade being sharpened to provide a cutting having a sharp pointed nose positioned to one side of said edge guide, anda handle secured to said blade and arranged to ,ex-'

tndover the walk or curb when the device isruntherealong. L' i i A lawn trimmer formed from a single sheet 'o'fgnetal tapering at its ends to central ,pqi iitspthe sheet be in 'Jbent along. a line longitudinall'y lof the s eetj and to one side i 1tpqiat;to o m ail a h ed sar .ointed.nos on-eachend of said blade-positioned v to" e 'side of said l v y hereofi aiiix myj i gm I "THOMAS J. nn'nnnw "Witnesses:

Janssmi, L'JOHN S. JAn 'q I 

